This means it can hover like a helicopter, but when flying forward can reduce the speed of the main rotor because the wings provide part of the lift.

这意味着它能像一架直升机那样作空中悬停，而在向前飞行时，又能降低主旋翼的速度，因为它的一对短翼提供了部分升力。

youdao

This means it can hover like a helicopter, but when flying forward can reduce the speed of the main rotor because the wings provide part of the lift.

这意味着它能像一架直升机那样作空中悬停，而在向前飞行时，又能降低主旋翼的速度，因为它的一对短翼提供了部分升力。

youdao